Chiral Logs in the Presence of Staggered Flavor Symmetry Breaking

Details Chiral Logs in the Presence of Staggered Flavor Symmetry Breaking Chiral Logs in the Presence of Staggered Flavor Symmetry Breaking

2001-11-26

arxiv.org/abs/hep-lat/0111051v3

Phys.Rev.D65:054031,2002

Physics

High Energy Physics

High Energy Physics - Lattice

version to be published in Phys Rev D: clarifications of finite size corrections and chiral fits added; typo in eq.(5) correct

Scientific paper

10.1103/PhysRevD.65.054031

Chiral logarithms in $m_\pi^2$ are calculated at one loop, taking into account the leading contributions to flavor symmetry breaking due to staggered fermions. I treat both the full QCD case (2+1 light dynamical flavors) and the quenched case; finite volume corrections are included. My starting point is the effective chiral Lagrangian introduced by Lee and Sharpe. It is necessary to understand the one-loop diagrams in the ``quark flow'' picture in order to adjust the calculation to correspond to the desired number of dynamical quarks.

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